Here's 2 pics and a video of how I'm building my dome drive system. In the pics you can see how the setup looks. And mounted in the body you can see the short shaft that will have a motor I removed from the Satellite motors assy. I did this because I'm trying to save all available room in the chest cavity for other goodies. I know this assy looks flimsy, But Vex gears and components have not let me down yet. If you watch the video, You can see the shaft turning and that's where the motor will connect. I just need some more parts.